In my experience, Face ID is much faster and more seamless. Basically it's like my phone isn't locked because before I'd even have a chance to think about it, it's unlocked. I was VERY resistant to losing the home button, but I find that the new gestures are much more natural for me. Obviously this is a personal preference thing, but for quite a while I had a touch ID iPad and a Face ID iPhone, and it was really night and day how much nicer Face ID felt to me, and how nice it is to not have a home button wasting space on the phone. If they found a way to suppport Touch ID in addition to Face ID, without stealing space from the screen, I'm all for it, but I can't imagine going back to the old style of phone with no Face ID and a home button.